Files
lodash/test/isInteger-methods.js
Benjamin Tan d5ef31929a Add initial test files from lodash v4. (#4172)
* Install test dependencies.

* Add initial test files.

These files were created using a simplistic AST manipulator using `recast` to
preserve formatting. There's bound to be a huge chunk of errors, but this serves
as a good start. QUnit was replaced with Mocha, with ES2015 imports running via
`esm`.

As far as possible, QUnit-specific syntax has been replaced with Mocha's
`describe` and `it`, while the native Node.js `assert` module is used for
assertions. Files in the `test` directory ending in `.test.js` will be treated
as test files.

* Add initial passing files to test run.
2019-02-12 09:11:32 -08:00

56 lines
1.8 KiB
JavaScript

import assert from 'assert';
import lodashStable from 'lodash';
import { _, stubTrue, MAX_INTEGER, stubFalse, falsey, args, symbol } from './utils.js';
describe('isInteger methods', function() {
lodashStable.each(['isInteger', 'isSafeInteger'], function(methodName) {
var func = _[methodName],
isSafe = methodName == 'isSafeInteger';
it('`_.' + methodName + '` should return `true` for integer values', function() {
var values = [-1, 0, 1],
expected = lodashStable.map(values, stubTrue);
var actual = lodashStable.map(values, function(value) {
return func(value);
});
assert.deepStrictEqual(actual, expected);
assert.strictEqual(func(MAX_INTEGER), !isSafe);
});
it('should return `false` for non-integer number values', function() {
var values = [NaN, Infinity, -Infinity, Object(1), 3.14],
expected = lodashStable.map(values, stubFalse);
var actual = lodashStable.map(values, function(value) {
return func(value);
});
assert.deepStrictEqual(actual, expected);
});
it('should return `false` for non-numeric values', function() {
var expected = lodashStable.map(falsey, function(value) {
return value === 0;
});
var actual = lodashStable.map(falsey, function(value, index) {
return index ? func(value) : func();
});
assert.deepStrictEqual(actual, expected);
assert.strictEqual(func(args), false);
assert.strictEqual(func([1, 2, 3]), false);
assert.strictEqual(func(true), false);
assert.strictEqual(func(new Date), false);
assert.strictEqual(func(new Error), false);
assert.strictEqual(func({ 'a': 1 }), false);
assert.strictEqual(func(/x/), false);
assert.strictEqual(func('a'), false);
assert.strictEqual(func(symbol), false);
});
});
});